A sign warns visitors against entering the 3,500-acre portion of the Buenos Aires National Wildlife Refuge. Note the 18-foot-tall pedestrian fence in the background. (FNC)
The 18-foot-tall border fence along the closed portion of the refuge. Sonora, Mexico, is located on the right. (FNC)
Sally Gall, acting refuge manager, estimated that a "couple hundred" individuals now attempt to cross the closed portion of the refuge daily, or roughly 20 times less than the estimated flow four years ago. (Fox News)
Discarded water containers, a shoe and backpack are seen just south of U.S. border, revealing recent border-crossing activity.
Discarded water containers, a shoe and backpack are seen just south of U.S. border, revealing recent border-crossing activity.